Is it safe to use a Maxtor SATA II/300 16MB Cache in my mac pro? In other words, is SATA II compatible with the Mac Pro? I looked on Apple's tech specs and I can't tell if SATA II is supported. http://www.apple.com/macpro/specs.html I think $89 for a 320GB SATA II drive with 16MB Cache is a killer deal? Anyone else think so, or is it too good to be true? Oh yeah, and on the box it says 300GB 16MB Cache, 7200 RPM, SATA II/300 and then on the bottom of the box there's a sticker that says "Bonus 20GB! 320GB Total Capacity Inside". Doesn't the format of the drive make it less actual usable storage?